900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






AXElite

AX3121 Datasheet Preview

AX3121 Datasheet

3.5A Synchronous buck Converter

No Preview Available !

AX3121
3.5A Synchronous buck Converter
GENERAL DESCRIPTION
AX3121 consists of step-down switching regulator with synchronous PWM converter.
These devise include a reference voltage source, oscillation circuit, error amplifier, internal
PMOS and NMOS etc.
AX3121 provides low-ripple power, high efficiency, and excellent transient
characteristics. The PWM control circuit is able to the duty ratio linearly form 0 up to 100%.
This converter also contains an error amplifier circuit as well as an enable/soft-start circuit
that prevents overshoot at startup. An enable function, an over current protect function and
short circuit protect function are built inside, and when OCP or SCP happens, the operation
frequency will be reduced. Also, an external compensation is easily to system stable.
With the addition of internal PMOS and NMOS, a coil and capacitors externally, these
ICs can function as step-down switching regulators. They serve as ideal power supply units
for portable devices when coupled with the SOP-8L-EP package, providing such
outstanding features as low current consumption. Since this converter can accommodate
an input voltage up to 23V.
FEATURES
- Input voltage4.5V to 23V
- Output voltageVFB to VCC
- Duty ratio0% to 100% PWM control
- Oscillation frequency250KHz typ.
- Enable/Soft-Start and Current Limit (CL).
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal SW P-channel and N-channel MOS.
- SOP-8L with Exposed Pad Pb-Free package.
1/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Aug.31, 2010




AXElite

AX3121 Datasheet Preview

AX3121 Datasheet

3.5A Synchronous buck Converter

No Preview Available !

AX3121
BLOCK DIAGRAM
SVcc
6uA
Soft-Start
EN/SS
PVcc
3.5V VEN CLM
FB
SGND
0.62V
PWM - Switched
Control Circuit
Oscillation
Circuit
Thermal
Shutdown
PMOS
SW
NMOS
PGND
COMP
PIN ASSIGNMENT
The package of AX3121 is SOP-8L-EP; the pin assignment is given by:
Name
FB
EN/SS
COMP
PVCC
SVcc
SW
PGND
SGND
Description
Feedback pin
ON/OFF Shutdown and Soft-start
pin
Compensation pin
Driver power supply pin
IC power supply pin
Switch pin. Connect
inductor here.
Power ground pin
external
Signal ground pin
ORDER/MARKING INFORMATION
Order Information
AX3121 XX X
Package Type
ES: SOP-8L-EP
Packing
Blank : Tube
A : Taping
Top Marking
Logo
AX 3 1 2 1
YYWWX
Part number
ID code:internal
WW: 01~52
Year: 10=2010
11=2011
2/11
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.4 Aug.31, 2010


Part Number AX3121
Description 3.5A Synchronous buck Converter
Maker AXElite
PDF Download

AX3121 Datasheet PDF





Similar Datasheet

1 AX3120 2.5A Synchronous buck Converter
AXElite
2 AX3121 3.5A Synchronous buck Converter
AXElite
3 AX3122 5A Synchronous buck Converter
AXElite
4 AX3123 1.4MHz Asynchronous Step-Down DC/DC Converter
AXElite





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy